Installation :: Dual Boot System - RTM Partition No Longer Available
Feb 10, 2016
I created a dual boot system quite some time ago and all was well until.RTM partition was completely up-to-date. I had recently updated to Windows 10 Build 10251 on the Insider partition.I turned the machine off on Sunday January 31, left town, and returned Saturday February 6. All was well with the dual boot when I turned the system off before leaving. When I turned the system on last night, it booted directly into the Insider Partition. There seems to be no option to boot into the RTM partition.
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Sep 15, 2015
I have 4 partitions.
1 => System Reserved
2 => Win 10
3 => Win 8.1
4 => Storage
When I try to boot into the win 8.1 it gives me an error. Even after restoring the win 8.1. partition from a Macrium image.
What gives? Two days ago I decided I wanted to shrink the win 8.1 partition.
I made a macrium image of my Win 10 partition (because I'm not crazy) and I already had a macrium image of win 8.1. I started shrinking the 8.1 and the computer went unresponsive so I rebooted. I used EASEUS Partition Manager.
I found out later that the reason the computer halted was because the version of EASEUS I used was outdated.
I attempted to boot into 8.1 and was greeted with the error. (Will update this post presently with the picture.)
I updated EASEUS and successfully shrunk the 8.1 partition. I took that unallocated space and enlarged the WIN 10 partition. Still unable to boot into 8.1.
Used macrium to overwrite the 8.1 partition.
Computer refused to boot completely. No Win 10 or Win 8.
Macrium restored the Win 10 partition, and the Win 8.1 partition. Discovered something interesting. Macrium restored the partitions as if I had never shrunk the 8.1 partition and enlarged the Win 10 partition. Is it supposed to do that?
Still unable to boot into Win 8.
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Jan 27, 2016
In my desktop I have two hard disks ( disk 0 and disk 1 ) . Disk 1 is a clone of disk 0 created by Macrium Reflect
Disk 0 : ( C: ) windows 10 pro , upgrade from windows 7 , ( E: ) windows 8.1 pro , ( G: ) Storage partition
Disk 1 : clone of disk 0
problem description : I see in msconfig / boot a wrong listing
windows 10 ( C:WINDOWS) : Current OS ; Default OS
windows 8.1 pro ( H:WINDOWS ) instead of ( E:WINDOWS )
Nevertheless the dual booting works fine as well as the shift between the disks via BIOS.
The question is , could I fix the situation using the EasyBCD of Neosmart Technologies to edit the bootloader ?
I see can change drive letter H: to E: and save the change , am I right or wrong ? or any other way ....
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Aug 13, 2015
I have two systems.System 1 is a desktop running W7 Premium SP1. I did clean install of W10 from iso on separate partition. W10 will not activate using W7 numbers. I suspect that is because I moved W7 to an SSD 6 mos. ago and W10 expects the old HDD. BTW, installed W10 to partition on the SSD
System 2 is dual boot laptop (Dell Inspiron) with W7 SP1 and W8.1. I want to keep W7, and I could try W10 install either by upgrading 8.1 or clean install to the 8.1 partition. Reccomendations? I don't want to risk losing the W7. I do have disk image backups of both W7 and W8.1.
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Nov 25, 2015
I have a dual boot system in the following configuration:
HDD-0 = Win7 OS, HDD-1 = Win7 OS, WinXP OS. I have successfully booted into each of these operating systems - and the Win7 OS on HDD-1 is an exact clone of the primary OS on HDD-0.
I just upgraded the Win7 OS on HDD-0 to Windows 10 using the "Get Windows 10" process. I now get the new blue Boot Manger screen with all three OS's listed and I can successfully boot into Windows 10 and Windows XP. But I cannot boot into the Win7 OS on HDD-1 (which I could before the Windows 10 upgrade). How the upgrade even knew about the other copy of Windows 7, since it was not active and lives on another HDD is beyond me.
One strange thing - if I do a cold startup (power on) I get the new Boot Manger screen. But if I do a Restart from Windows 10, I get the old, black & white boot manger screen - and it does list all three OS's correctly, too.
The error message I get when trying to open (boot) the Windows 7 OS is: "LogonUI.exc - Entry point not found. RtlReleasePath could not be located in the ntdll.dll" And, like others, I now get the black screen with "Windows 7, Build 7601 This copy of Windows is not genuine (but it was yesterday before the Windows 10 upgrade on the other HDD).
And like others, I can start the Crtl+Alt+Del to get the screen with users, Task Manger, etc. And, I can run all my applications by manually starting them in a New Task and browsing to the exe file - like Firefox.exe or Word.exe So, it looks like Windows 7 started and may be running. I just can't get into it.
I think both issues, the LogOn and the "Not Genuine" are both related to the Entry Point no located in the ntdll.dll.
At this point I really don't want to reload Windows 7 since it appears to be running and all the apps can be run manually.
All this happened after the upgrade of the other Win7 on HDD-0.
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Jul 30, 2015
So I have a 128gb 840 evo ssd as my C drive and then a WD caviar Blue as a mass storage drive . So with windows 10 just coming out and it being free I thought I would duel boot it with windows 7(currently running) and went and cleared out a bunch of old games and programs and ended up the 47 gb free so I would have space to make a partition and have a little room after that. then once I tried to shrink the volume it says the maximum i can shrink it is 129mb. so I tried on my HDD and it worked just fine being able to shrink it 600GB(the remaining storage).
System Specs
i5 4570k
EVGA GTX 760
128gb 840evo ssd
1tb WD Caviar Blue
EVGA supernova G2 750 watt
16gb corsair vengeance 1600 ddr3
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Aug 3, 2015
Prior to a couple days ago, my system was setup in a dual boot configuration, with Windows 8.1 (not set as Default, but technically my "primary"), and the Windows 10 Technical Preview (Default) which I used to play around with as a sort of clean work environment. OS's were installed on physically separate drives.
A couple days ago, I successfully updated my 8.1 installation to 10. Dual boot still functioned properly, although this upgrade reset the 8.1-now-10 to Default OS.
Shortly after, I decided to wipe the Technical Preview drive, and do a clean install of the now-released 10, and reset my whole little work environment. After installation was completed, I immediately noticed that no boot menu presented itself, even for a moment. Additionally, in the Advanced System Options/Startup & Recovery, no other OS choices appear.
For some odd reason, there was ONE thing I did differently during this installation though: Normally, on a clean install, I will delete ALL existing partitions on a given target drive, and allow the setup to recreate them. However, this time -- possibly because the new-ness of 10 had me slightly confused -- I deleted only the primary data partition that contained the Tech Preview install, but left the System Reserved and OEM Reserved partitions. I'm unsure if this is the source of my troubles or not.
Regardless, as of right now, I'm unable to access my original 10-upgraded installation, and getting this restored.
As I'm sitting on a clean install of my 2nd OS, I've no problems with wiping it and trying again.
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Oct 9, 2015
Today I installed Windows 10 on my machine (ASUS N55SF laptop) for the first time on a separate hard drive. Now I have Windows 7 on my main hard drive and Windows 10 on my new drive (the latter being an SSD one). After installing Windows 10, I got a new boot option in my BIOS called "Windows Boot Manager" which is set as default, but it runs Windows 10 directly, I can't see any boot manager (I can assure "Windows Boot Manager" behaves this way because my BIOS lets me override the boot option, so that I can directly run any boot option, and this is probably the only way I can run Windows 7 currently).
If I go to Start → Advanced system settings → Startup and Recovery → Settings, I only see Windows 10 in the "Default operating system" drop-down menu, while I only see Windows 7 if I do this while on Windows 7. It's like the two OSs are not completely aware of each other.
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Sep 18, 2015
I had Win7 and did the free upgrade to Win10.
Before the upgrade I was smart enough to do a complete system image of Win7.
1. If I disconnect the Drive that Win10 is installed on and reinstall Win7 on a different drive, can I use the system image to recover Win7 back to the state it was before the upgrade?
2. Reconnect the Win10 drive and and boot up the system, will system ask which OS I want to boot up with at that point or will there be a conflict?
It's not that I don't like Win10 given I just upgraded on Thursday, September 17th and I need time to fully go thur all the operations and functions. I want to get a reasonable working knowledge and understanding of the Win7 OS, till I do I want the ability to keep and use Win7.
It took me quite some time to migrate from XP Pro to Win7 because I created a dual boot system for that purpose and I do not want to be FORCED cold turkey to switch to a new OS till I am ready to do so.
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Sep 24, 2015
My laptop has dual boot - Windows 7 and Windows 10. My Win7 environment is my main working environment with lots of programs installed and important files. I installed the Win10 environment just to play around with 10 during the technical preview. Now, I would like to disable the 10 environment and upgrade the 7 to 10. Am I able to do this, or have I already "used up" my one upgrade on this computer's Windows license?
I notice that in Windows 7 I have not received the icon in the notification area that invites me to upgrade to 10. This makes me think I might have used up my chance to upgrade.
My end goal is to have a single Windows 10 environment. Note that the reason I want to upgrade my 7 environment to 10 is because I don't want to have to re-install all of my programs and files into the current 10 environment.
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Jun 15, 2015
After several weeks of testing I'm ready to go full on Windows 10 and want to get rid of Windows 7 but I have some partitioning issues I want to clean up. I currently have Windows 7 on drive 0 (360 GB) and Windows 10 on drive 1 (500 GB). Both are SATA drives and RAID is enabled in the bios but not active.
What I think I'd like to do is simply swap the drives physically so that Drive 0 has my current Windows 10 install on it and make it primary boot active etc. The drive with Windows 7 on it would become drive 1 and I would delete the Windows 7 partition and re-partition it with a clean empty partition just for extra space.
Second question, any advantage to using this drive configuration in a RAID setup?
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Aug 13, 2015
I recently upgraded my windows 7 to windows 10. I have had everything activate properly. I then decided to do a fresh install of windows 10. I loaded boot media on my pc and everything went fine. Now with the fresh install of windows 10, at boot up, I get the option to choose windows 10 or windows 7. How to I change this so it ALWAYS defaults and boots windows 10? Considering I wiped my hard drive clean windows 7 shouldn't even be an option.
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Dec 19, 2015
I have win10 64 installed on my SSD and win10 32 bit on a HD. The SSD is GPT partitioned and the HD MBR. I can boot from the Windows boot loader in the BIOS into 64 bit windows on the SSD and, by selecting the appropriate HD in the BIOS into the 32 bit windows in the HD. I cannot figure out how to get that boot menu (either gui of text based) that I have read about in the forums. Do I need to convert the HD to GPT as well. Do I need to change anything to get this to work?
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Mar 4, 2016
I have Windows 10 and 8.1 dual booted but I’m having trouble removing 8.1. 10 is on a Seagate 2TB HDD, and 10 is on a Samsung 2TB HDD. Both are SATA and my motherboard is BIOS. As long as the Samsung (8.1) is drive 0 and is boot’s first choice, all is well. I get the option to select either OS, and either one can be made default.
In attempting to remove 8.1 I have tried several things like making the Seagate drive O, removing power from the Samsung, swapping boot choice, but always fail and I continually get, “an operating system wasn’t found” no matter the disk or boot sequence, except the one above.
Included are jpg’s of disk management while in Windows 10, both disk and volume views. How to decouple 8.1?
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Jan 3, 2016
I attempted to set up a dual boot configuration using my existing Win 7 Pro on a Samsung SSD drive, and a clean install of Win 10 Pro on a fresh Kingston SSD drive. I created bootable Windows 10 installation USB, reset the UEFI Bios boot order and proceeded with the install. Win 10 installed, however it would not recognize the Win 7 Pro drive. I checked the UEFI Bios again, and the Samsung SSD was no longer shown in the "Fixed Boot Order Priorities". However, it was listed under "Hard Drive BBS Priorities", and under "Boot Override". It also shows up in Win 7 in the drives listings.
My motherboard is a MSI Z97 Gaming 5, with Click Bios 4 v1.9.
I must also mention, my Samsung SSD with Win 7 Pro was set up not with UEFI but Legacy boot. This was my first mobo with UEFI, so I made that mistake due to my ignorance.
I reformatted the Kingston Win 10 drive. Rebooted, but got error message that boot device not found. I rebooted and hit F11 to get back into Bios. A popup box gave me a listing of bootable devices and the Samsung SSD appeared. Selected it and it booted into Win 7 no problem. I went back into the Bios, but the Samsung SSD still not listed. I shut down the system, unplugged the Kingston SSD, rebooted, went back into Bios, and the Samsung returned.
I then shut down the system, connected the Kingston into a different SATA port, rebooted the system, went back to Bios, and the Kingston remains unlisted in the "Fixed Boot Order Priorities" as before, but shows up in "Hard Drive BBS Priorities", and under "Boot Override". It also shows up in Win 7 in the drives listings. Remember that the Kingston is just formatted, no op system installed on it.
I set up the Win 10 install on the Kingston SSD as a legacy drive too. Another question I will ask is can you have one operating system on a legacy drive and one on a UEFI drive in the same PC?
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Nov 27, 2015
I have Win 10 as the second of a dual boot with Vista. Each is on it's own hard drive. If I remove the Vista drive then win 10 won't boot as it is looking for winload.exe. Is there a way I can give it access to the winload.exe it is looking forand then uninstall Vista? If this cannot be done it isn't a big problem weaving Vista active, I just don't need it anymore.
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Nov 16, 2015
I was running win 7 (64bit) pleasantly but decided to install Win10, did all the needed stuff for getting dual boot setup.Win10 booted fine, when selected from dual boot menu, but I have many issues on win10, Lenovo laptop is begging for mercy on win10 for many things, my android phone gets disconnected every few seconds if I use youtube, laptop becomes sluggish. USB3 will not install, which worked in win7 earlier.
Fed up with win10, even after disabling driver signature, making sure every driver is correct which I am installing, but this laptop hates win 10 as of now.Now if I choose to run win7, lappy reboots and thats a LOOP. my win7 installation is shown in Drive letter E: while windows 10 is shown in C: What would be the safest way of Re-installating win 7 on E: without loosing the following the crappy win 10 of c:/ dual mode option on win 7 +10
What I want is to run win7 setup which has SP1 integrated and still be able to boot in win10 if I needed later.I have activation keys for both provided by my office which is based on volume licensing.
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Jan 12, 2016
I have a PC with win 10 x64 installed. It is a new PC with UEFI firmware and secure boot enabled, though I can disabled it very easily.
I want to installed Win 7 x86 (32bit) on a second hard drive and have it dual-boot config with the current Win 10. I know I have to disable secure boot for installing 32 bit, but Im concerned about the process of installing Win 7 AFTER the already installed Win 10.
How can I go about doing this without losing access to my Win 10? I need to install win 7 for compatibility reasons.
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Oct 13, 2015
I am dual booting with Win7. I have not used 7 in a few months. I want to know if there is a way to delete and merge the partition that Win7 is on. Also I want to know how to get rid of the dual boot screen and just go with the reg Win10 boot screen.
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Aug 5, 2015
I have a Acer Aspire XC-603G desktop upgraded to Windows 10 64bit Home (no Hyper-V). I want to run 16 bit software that is incompatible. I would like to dual boot with Vista x86 (gave away my XP). From what I understand, you must load the older version first due to Windows 10's MBR. Can I backup/clone Windows 10 partition, reformat and repartition the HDD, install Vista in first partition, then restore Windows 10 to the second partition? I'm thinking I'll need a fresh Windows 10 install. Or is there a simpler way? The only other way I see is to buy the Pro upgrade to get Hyper-V. And if I did the latter would it really be compatible with my Windows 95 16bit ImageReader Scanner software?
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Feb 10, 2016
I recently (clean) installed Windows 10 on a new SSD. Windows 7 resides on my first drive.
1) I first set the USB to boot from;
2) Began to install Windows 10;
3) First snare: upon first reboot, after removing the USB, the system just started my old Windows 7 (!). (I expected a dual boot menu there.)
4) Rebooted, set SSD to first disk, and finished installing Windows 10;
5); Tried to add boot menu later (both in Windows 7 and Windows 10), using the Advanced System Settings, to no avail: neither OS sees another boot partition.
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Jul 24, 2015
Can I have both a GPT and MBR formatted drives on a dual boot system?
I would like to retain my Win 7 installation as is with MBR formatted hard drive, and after the Win 8.1 to Win 10 upgrade, do a clean Win 10 install with GPT (UEFI) format.
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Jul 30, 2015
I have a dual boot 7 and 8.1, which are on separate drives. I'd like to keep 7 and install 10 over 8.1, I have downloaded 10 on usb. My question is do I have to disconnect the windows 7 drive before I try to install 10?.
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Aug 17, 2015
I have the Windows 10 Pro ISO with a Windows 10 key. (from MSDN)
I want to install Windows 10 as dual boot with Windows 8.1. Both are x64.
Is it possible to install Windows 10 from the ISO? I know you can upgrade that way. But I want to do a clean install AND install alongside Windows 8.1.
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Apr 14, 2016
Windows 10 currently installedUEFI (Legacy/BIOS is supported but I do not prefer using it as it may cause more problems in the future)1 Hard Disk Drive
Goals: Install Windows 7 on another partitionMaintain my current Windows 10 installationNOT have to switch to Legacy/BIOS mode
I found this: Windows 10 - Dual Boot with Windows 7 or Windows 8 But it assumes a Windows 7 installation and subsequently dual booting Windows 10 on it. What I would like is essentially the opposite.
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Aug 17, 2015
I have dual booting setup on my pc my main system and my development system but to get the development system my computer first boots the main one then asks me which os i would if the main one it goes right to as it already loaded but if it is the development system it will restart and load that, so my pc has to boot twice. Is there a way from the main system some how i can restart straight to the other one. Both os are windows.
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